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Reliable Ultra Trace Analysis of Cd, U and Zn Concentrations in Greenland Snow and Ice by Using Ultraclean Methods for Contamination Control

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Title
Reliable Ultra Trace Analysis of Cd, U and Zn Concentrations in Greenland Snow and Ice by Using Ultraclean Methods for Contamination Control
Other Titles
청정실험절차를 활용한 그린란드 눈·얼음 내 Cd, U, Zn 농도 분석
Authors
Han, Changhee
Hwang, Heejin
Kang, Jung-Ho
Hong, Sang-Bum
Han, Yeongcheol
Lee, Khanghyun
Hur, Soon Do
Hong, Sungmin
Subject
Biochemistry & Molecular Biology; Chemistry
Keywords
ultraclean procedure; ultralow trace elements; contamination; Greenland snow and ice; seasonal variations; anthropogenic inputs
Issue Date
2020-06
Citation
Han, Changhee, et al. 2020. "Reliable Ultra Trace Analysis of Cd, U and Zn Concentrations in Greenland Snow and Ice by Using Ultraclean Methods for Contamination Control". MOLECULES, 25(11): 2519-2534.
Abstract
This study presents ultraclean procedures used in the challenging task of determining trace elements at or below the pg/g concentration level encountered in Greenland snow and ice. In order to validate these ultraclean procedures, recent snowfall and Holocene ice from northwest Greenland were analyzed for Cd, U, and Zn concentrations. The total procedural blanks brought through the entire measurement procedure proved to be negligible, compared to trace element concentrations, measured in snow and ice samples. This validates the overall practicality of the proposed ultraclean procedures, thereby ensuring the reliable measurements of ultra-trace analysis. A comparison between our study and published data shows that improper procedures employed throughout all stages, from field sampling to analysis to elevate the concentrations by several orders of magnitude, relative to the reliable concentration ranges. The risk of contamination exposure for selected trace elements appears to increase in the order of U < As Pb < Cd < Zn. Reliable measurements of Cd, U, and Zn concentrations in snow and ice allowed us to interpret the data in terms of seasonal variations in the inputs of crustal and anthropogenic sources to Greenland ice sheet.
URI
https://repository.kopri.re.kr/handle/201206/11820
DOI
http://dx.doi.org/10.3390/molecules25112519
Appears in Collections  
2020-2020, Investigating anthropogenic and natural characteristics of atmosphere-ice sheet exchanges using the international deep ice coring network (20-20) / Kang, Jung-Ho (PE20190)
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